Question

What are used for holding things together or opening them up

Answer 1

linchpin Add to list Share. Literally, a linchpin is the pin that goes through the axle of a wheel to keep it in place, but linchpin can be used to mean an important part of anything, the thing that holds it all together. The linchpin is something that supports and holds another thing together.

Answer 2

Hinges

For Extra Knowledge:-

ꜰᴇᴡ ɪɴᴅɪᴠɪᴅᴜᴀʟꜱ ʜᴀᴠᴇ ʜᴀᴅ ᴀꜱ ᴘʀᴏꜰᴏᴜɴᴅ ᴀɴ ɪᴍᴘᴀᴄᴛ ᴏɴ ꜱᴄɪᴇɴᴄᴇ ᴀꜱ ɢᴀʟɪʟᴇᴏ, ᴡʜᴏꜱᴇ ɢʀᴏᴜɴᴅʙʀᴇᴀᴋɪɴɢ ɪɴᴠᴇɴᴛɪᴏɴꜱ ᴀɴᴅ ᴅɪꜱᴄᴏᴠᴇʀɪᴇꜱ ᴇᴀʀɴᴇᴅ ʜɪᴍ ᴛʜᴇ ᴛɪᴛʟᴇ 'ᴛʜᴇ ꜰᴀᴛʜᴇʀ ᴏꜰ ꜱᴄɪᴇɴᴄᴇ'. ɢᴀʟɪʟᴇᴏ ᴡᴀꜱ ᴀɴ ᴇxᴘᴇʀɪᴍᴇɴᴛᴀʟɪꜱᴛ ᴡʜᴏ ꜰᴏʀ ᴛʜᴇ ꜰɪʀꜱᴛ ᴛɪᴍᴇ ʜᴀᴅ ᴛʜᴇ ɪɴꜱɪɢʜᴛ ᴀɴᴅ ᴛᴀʟᴇɴᴛ ᴛᴏ ʟɪɴᴋ ᴛʜᴇᴏʀʏ ᴡɪᴛʜ ᴇxᴘᴇʀɪᴍᴇɴᴛ.

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